The initial purpose of this project was to use Y-DNA testing to learn which of the early Hamman (and close spelling variants) lines of Colonial America were related to each other. The project later evolved to include Y-DNA testing that helped many families learn their European place of origin. The following is a link showing the patrilineages and Y-DNA results for each of the participants in the project: http://www.brian-hamman.com/Hamman_Y_chromosomeResults.htm The project focuses mostly on lines originating in German speaking lands such as shown on the following map: http://www.brian-hamman.com/HammanYDNA-Clans_Origins-in-Germany.jpg However, spelling variants from anywhere in the world are welcome to join: https://gap.familytreedna.com/country-of-origin-charts.aspx The project is also open to anyone with any Hamman (and close spelling variants) ancestry who has taken a Family Finder (autosomal) DNA test and/or those who have taken a mtDNA test to learn more about their Hamman ancestry. Please email me (Brian Hamman) at brianhamman@yahoo.com if you have any questions at all.